Makes more sense to use the front camera as an eye tracking device. Then you get a screen without obstruction. Maybe Apple is already on it: http://www.patentl

Makes more sense to use the front camera as an eye tracking device. Then you get a screen without obstruction. Maybe Apple is already on it: http://www.patentlyapple.com/patently-apple/2013/10/apple-files-eye-tracking-system-with-advanced-gaze-controls.html http://www.patentlyapple.com/patently-apple/2013/10/apple-fi...